Whoa there!

Features
Scan for nearby Pokemon from ANY location
Customize the scan distance and scan time. Can choose to leave a smaller footprint on the GO servers
Search for any location with native map search
Only relies on the servers that Pokemon GO relies on, not any third party servers. The service will only be down if GO servers are down
Clean, native interface and easy controls
FREE!

NOTE: This app requires a Pokemon Trainer Club login, but I only share that info with the PTC/GO servers to get Pokemon locations. I don't want or need your account information, and I don't have any way of getting it once you enter it into the app, so security is not an issue with PokeSensor. If you are still unsure, I understand your concerns. Feel free to check the source code to see that I don't collect your account information. github.com/MrPat/PokeSensor